>>75262500They have better things to do, seriously. Getting multiple elves to agree on world domination is already hard enough, but actually having the combat and knowledge to obtain a goal like that would require insane planning and luck. It would take a sorcerer of absurd prowess to achieve something like that, and other legendary heroes typically work together to stop people like that from obtaining too much power.
Much like real life, individuals in the fantasy world are also minding their own business and sorting their own problems. If elves wanted to suddenly rise up collectively, they potentially could, but they're too busy adventuring, learning, performing, killing each other for societal gain, and fucking each other and themselves to actually achieve that kind of long-term control. The only elves that are truly, majorly, insidious, evil cunts are drow.